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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Korean Journal of Crop Science
Journal Basic Information
Journal DOI :
The Korean Society of Crop Science
Editor in Chief :
Volume & Issues
Volume 33, Issue s01 - Dec 1988
Volume 33, Issue 4 - Dec 1988
Volume 33, Issue 3 - Sep 1988
Volume 33, Issue 2 - Jun 1988
Volume 33, Issue 1 - Mar 1988
Selecting the target year
Modeling for Predicting Yield and
-Acid Content in Hop (Humulus lupulus L.) from Meteorological Elements II. A Model for Predicting
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 323~328
The hop alpha-acid content prediction model developed with meteorological elements in Hoeongseong was Y=28.369-0.003X
6/, with MSEp of 0.004, Rp
of 0.9987, Rap
of 0.9949 and Cp of 7.00. The total sunshine hours (X
), the maximum temperature (X
) and the total precipitation (X
5/) at flowering stage. the maximum temperature at flower bud differentiation stage (X
) and the maximum temperature at cone ripening stage (X
6/) influenced on hop alpha .acid content as decrement weather elements. The maximum temperature at cone development stage(X
) effected on
-acid content as increment weather element.
Influence of Nitrogen Level and Planting Density on the Leaf Characteristics of Rice(Oryza sativa L.) Cultivars
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 329~335
[n order to find out the effects of nitrogen fertilizer and planting density on the leaf characteristics of high yielding cultivars of rice, Dongjin (Japonica type) and Samkang (Tongil type) were .grown under two nitrogen levels (150 and 250 kg N/ha) and three planting densities (30
15 cm, 30
12 cm, 30
9 cm. Leaf blade, sheath and dry weight of individual leaf. the number of green leaves after flowering were measured. Samkang was characterized as longer and wider leaf blade and sheath than Dongjin, less sensitive to nitrogen fertilizer and planting density, and higher proportions of green leaves after flowering. These morphological characteristics of Samkang caused an increase of grain yield by 30 per cent.
Lodging Related Traits and Yield of Rice as Affected by Time of Paclobutrazol Application
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 336~342
An experiment was carried out to know the effects of paclobutrazol application time on the lodging related traits and yield of a rice variety. Seomjinbyeo, at two nitrogen leveles. Paclobutrazol (3kg 10a of 0.6% G) was applied 43, 33, 23, and 13 days before heading (DBH) and lodging related traits were observed 10, 20, 30, and 40 days after heading (DAH). Earlier applications of paclobutrazol reduced the length of lower internodes and later applications reduced the upper internodes. Culm length tended to decrease as time of paclobutrazol application delayed. Although lodging was not occurred in all plots. lodging index of paclobutrazol treated plots was lower than that of control and increased with maturity, Fresh weight of shoot increased up to 30 DAH and then decreased. Both fresh weight and breaking strength did not show consistent tendency with time of paclobutrazol application and observation. Direct effect of shoot fresh weight contributing to lodging index decreased with maturity. but that of breaking strength and culm length was similar during the ripening stages. Direct effect contributing to lodging index was greater in the order of breaking strength culm length. and fresh weight 40 DAH. Starch content of culm base decreased up to 20 DAH and then increased up to 40 DAH. Cellulose content increased up to 20 DAH, but hemicellulose and lignin did not change significantly during the ripening stages. Starch, cellulose, hemicellulose, and lignin contents of culm base did not correlated with breaking strength and time of paclobutrazol application did not show consistent results. Paclobutrazol applied 13 DBH did not reduce yield of rice. but the earlier applications reduced yield due to a reduced number of spikelets per panicle.
Varietal Differences in Growth and Development Affected by Temperature in Barley
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 343~349
In order to get informations for breeding early barley cultivars, the thermosensitivity and low temperature growth ability about the breeding materials vernalized were tested at the high '||'&'||'amp; low temperature and field conditions. The temperature coefficient (Q10), ratio and thermosensitivity for plant height were various among cultivars versus temperature treatments. The early cultivars had greater Q10 values and insensitive responses to temperature changes. The Q10 and thermosensitivity for the time of flag leaf unfolding were various among cultivars, but the coefficient of variation in the thermosensitivity was greater, so the character would be more useful for investigating the varietal differences. The Q10 and thermosensitivity for plant height were not significantly correlated with Q10 and thermosensitivity for the time of flag leaf unfolding. The periods from heading to flowering were 2 to 4 days at the high temperature plot, but 1 to 11 days at the low temperature plot, showing much greater variations. In general the cultivars with greater difference of heading time between the high and low temperature plots were Suwon 218, SB 76588, Oweolbori, and Jogangbori, showing the sensitive thermophase and early heading.
Influence of Turbidity of Submerged Water on Photosynthetic Rate of Rice Plants
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 350~352
This study was carried out to know the influence of turbidity of submerged water on photosynthetic rate of rice plant after water submerging treatment. Rice plants were transplanted in the pot at maximum tillering stage and they were sumberged for 3days at meiotic stage, 20days after transplanting, in the plastic container which had the clear and turbid water temperature adjusted around 24 to
. Photosynthetic rate at 6 hours recovery after submergence was 41.5 to 54.2% compared to the control, but in the case of cultivar 'Nagdongbyeo', it was rapidly increased by 97.3 to 104.6% in the clear water and by 68.6 to 77.5% in the turbid water at 2 to 4 days recovery after submergence. Photosynthetic rates per plants at 6 hours to 4 days recovery after submergence were 128.3 to 245.5
, in 'Samgamgbyeo' and 71.1 to 162.4
in 'Nagdongbyeo' Photosynthetic rate to respiration ratio of rice plant recovery after submergence was lower compared to control plant and it was lower in 'Nagdongbyeo' than that in 'Samgangbyeo'.ngbyeo' than that in 'Samgangbyeo'.gangbyeo'.pos;.
Leaf Photosynthesis as Influenced by Mesophyll Cell Volume and Surface Area in Chamber-Grown Soybean (Glycine max) Leaves
Jin Il, Yun ; S. Elwynn, Taylor ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 353~359
Variations in photosynthetic capacities of leaves differing in thickness were explained on the basis of relationships between gas exchange and internal leaf structure. The relative importance of gas diffusion and of biochemical processes as limiting for leaf photosynthesis was also determined. Mesophyll cell surface was considered to be the limiting internal site for gas diffusion. and cell volume to be indicative of the sink capacity for CO
fixation. Increases in cell surface area were assumed to reduce proportionately mesophyll resistance to the liquid phase diffusion of CO
. Increased cell volume was thought to account for a proportional increase in reaction rates for carboxylation, oxygenation. and dark respiration. This assumption was tested using chamber-grown Glycine max (L.) Merr. cv. Amsoy plants. Plants were grown under 200, 400, and 600
mol photons m
-1/ of PAR to induce development of various leaf thickness. Photosynthetic CO
uptake rates were measured on the 3rd and 4th trifoliolate leaves under 1000
mol photons m
-1/ of PAR and at the air temperature of 28 C. A pseudo -mechanistic photosynthesis model was modified to accommodate the concept of cell surface area as well as both cell volume and surface area. Both versions were used to simulate leaf photosynthesis. Computations based on volume and surface area showed slightly better agreement with experimental data than did those based on the surface area only. This implies that any single factor, whether it is photosynthetic model utilized in this study was suitable for relating leaf thickness to leaf productivity.
The Selection Efficiency of Some Agronomic Characters of Naked Barley in the Central Region in Korea
Chang-Hwan Cho ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 360~369
This experiment was carried out to investigate the heritabilities, genetic correlations, path-coefficients, selection indexes and genetic advances for the desirable characteristics of naked-barley (Hordeum vulgare L.) in the central region of Korea. Genetic advances were calculated from selection indexes for each characters. It was considered that selection efficiency was increased in case it was calculated from the combination of two or three characters. These characters should be very useful agronomic characters for selection because they could be measured and counted easily, and thus it is also possible to save labour and expenses.
Differential Response in Photosynthesis and Respiration of Rice Cultivars as Affected by Oxyfluorfen and Bensulfuron-methyl
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 370~374
The study was objected to compare the differential responses in photosynthesis and resipiration by selected cultivars as tolerant or susceptible to oxyfluorfen and bensulfuron-methyl. Clark-typed oxygen elect rude system (Rank Brothers Co., Bottisham. UK.) was used to detect the releasing oxygen from the leaf disks. By increasing oxyfluorfen concentrations. both cultivars were disposed to decrease in photosynthetic O
generation and increase in respiratory O
generation. Comparing of both rice cultivars. cv. Mushakdanti (selected at 10
-3/M as the susceptible) failed down in photosynthetic O
generation as lower as 43% of the control but cv. Aichiasahi to 55%, respectively. However. no significant difference in respiratory O
generation were detected between both cultivars. As for bensulfuron-methyl. almost same tendency was conferable with general responses on O
generation between both selected cultivars, namely cv. IR 1846 failed down in photosynthetic O
generation as lower as 55% of the control but cv. Chinsurah Boro II to 77%. respectively.
Differential Response in Ethylene Evolution and Membrane Permeability Between Rice Cultivars as Affected by Oxyfluorfen
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 375~379
To identify the evidence in tolerance to oxyfluorfen between selected rice cultivars (cv. Chokoto as the tolerant and cv. Weld Pally as the susceptible), the differences in ehtylene evolution, chlorophyll contents and electro-conductivity as affected by various concentrations of oxyfluorfen were assessed. -Under 10
M oxyfluorfen, the susceptible cultivar showed rapid and higher rate of ethylene evolution, and under 10
M oxyfluorfen, less difference in ethylene evolution between both cultivars. -Upto 10
M oxyfluorfen, no difference in chlorophyll contents of both cultivars, however, at 10
M, the susceptible showed as less chlorophyll contents as half of the tolerant. At 10
M, both cultivars showed complete decomposition of chlorophyll. -At 10
M oxyfluorfen. both cultivars indicate the increased rate in electro-conductivity, and the susceptible cultivar released as much electrolytes as 10% of the tolerant.
Relationship between Fruiting Period and Agronomic Characters in Korean Local Soybean Collections
;Shin-Han Kwon;Hi-Sup Song;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 380~385
The present study was conducted to evaluate agronomic characters of the soybean germplasm which was collected from the sites covering whole areas of southern Korean peninsula. A total of 2,748 Korean native soybeans was grouped for fruiting period and in this group frequency distribution of the important agronomic characters and relationships among the characters were determined. The results obtained were summarized as follows; The soybean germplasm was comprised of SeoulㆍKyonggi-do 7.5%, Kangwon-do 13.3%, Chungchongbuk-6.6%. Chungchongnam-do 12.3%, Chollabuk-do 10.7%, Chollanam-do 12.6%, Kyongsangbuk-do 20.8%, Kyongsangnam-do 15.3% and Cheju-do 0.6% in number of collections. Frequency distribution of the germplasm for fruiting period was 0.14% in Group I (below 55 days). 1.67% in Group II (56-60 days), 10.58% in (Group III(61-65 days), 23.18% in Group IV(66-70 days), 25.91% in Group V(71-75 days) 19.79% in Group Ⅵ(76-80 days), 15.1% in Group Ⅶ(81-85 days) and 3.6% in Group Ⅷ(over 85 days). The lines over 70 days in fruiting period were as much as 64.4% of germplasm. The fruiting period varied largely from 45 days to 91 days. Fruiting period was positively correlated to seed weight, days to maturity, days to flowering, plant height and number of branches per plant, respectively. While. it was negatively correlated to number of pods, lodging and virus infectivity, repectively, and in particular negative correlation was shown significantly between yield and fruiting period. Average yield was very high as much a 1.389kg/ha in fruiting period Group I, and decreased with increment of fruiting period, 1.400kg/ha in Group II. 1.384kg/ha in Group III. 1,299kg/ha in Group IV, 1,197kg/ha in Group V, 1,117kg/ha in Group Ⅵ, 967kg/ha in Group Ⅶ and 832kg/ha in Group Ⅷ.
A Study on the Evaluation of Barley Hybrids in their Early Generation
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 386~391
Five barley crosses and their progenies (F
, and F
) were evaluated the potentiality of hybrid populations to segregate superior yielders in later generation. Four characters used for evaluation were number of spike, number of grain, spike weight and grain weight per plant. Superiority value (Y) of number of spike was best in SB76588
SB72648 and average of superior plants in F
, was excellent in this cross. Milyang 6
Suwon 203 showed high Y value and average of F
superior plants in the number of grain. Spike weight showed the highest Y value and excellent averages of superior plant in Milyang 6
Suwon 203. Superiority value of grain weight per plant coincided with average of F
superior plants in 3 crosses and SB76588
SB72648 was the best among the crosses.
Barley Haploid Production Using Interspecific Crosses between Hordeum vulgare and H. bulbosum
Kim, B.Y. ; Duane L. Johnson ; Kim, D.U. ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 392~399
The experiments were conducted to establish the effective barley haploid production system using interspecific crosses. Three spring barley cultivars. Bruce. Klages and Rodeo were used for this experiment. 1, 687 florets of three barley cultivars were crossed with bulbosum pollens. 1, 079 seeds were harvested and obtained 834 embryos so that seed set rate and embryo production rate were 64% and 77%, respectively. IAA effect was superior to NAA for root development and 1 ppm concentration of IAA gave the best result among five concentrations; 0ppm, 1ppm., 5ppm, 10ppm and 30ppm.
Studies on Processing Techniques in Barley III. The Processing and Cooking Quality of Cut-polished Naked Barley under the Different Polishing Rates
Young-Sang Kim ; Young-Sang Kim ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 400~403
This study was conducted to evaluate the polishing process that affects the polishing properties and cooking qualities of cut-polished barley. Naked barley, Youngsanbori (Sedohadaka), which was produced in Cheonnam province, Korea in 1981, was cut and polished to have the polished yield per cent of four grades, 68.27, 72.85, 75.51 and 78.70, in contrast to the conventionally polished barley which was polished up to 70.10 per cent. Length. thickness and width of the kernels and weight of 1,000 kernels of the cut-polished barley were increased with improving the grade of the polishing yield. Energy consumption was found to be reduced according to increasing the polishing yield of the cut-polished barley. As polishing yield of the cut-polished barley were increased. the contents of P
O, MgO and Mn were increased. Also whiteness, water uptake and expanding volume of cooked barley were increased in accordance with upgrading the polishing yield of the cut-polished barley.
Effect of Fertilizer Levels on Maior Agronomic Characteristics and Seed Yield in Job′s Tears [Coix lachryma-iobi L. var. mayeur STAPF]
Jung-Il Lee ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 404~411
This study was conducted to find out the optimum fertilizer level for two job's tear varieties. Heuksuk and Ewon from local cultivars at 18 compositions of fertilizer levels. Plant height was longest. number of tillers and leaves were increased. stem diameter was thickest, 100 grains weight. stem and grain yield were heaviest at the compositions of fertilizer amounts with N-P
O were 18-9-9
kg/ (3-2-2) per 10a. Plant height. number of tillers and leaves. stem diameter, 100 grains weight and stem yield showed significant difference between grain yield and showed positive correlation. Judging from the results reported above, in optimum fertilizer amounts for N-P
O seemed to he 18-9-9
kg/ (3-2-2) per 10a.
Combining Ability Analysis and Selection Effectiveness for Tolerance to Cold-Induced Sterility in Rice
Huhn Pal, Moon ; J. Neil, Rutger ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 412~419
Cold-induced sterility is a problem of rice (Oryza sativa L.) production in temperate regions and high elevation tropics. The present study was conducted to measure combining ability, determine character associations. and to evaluate effectiveness of F
selection for tolerance to this type of cold injury. The F
and reciprocal backcross F
populations of a nine-parent diallel were grown at Davis, California. a relatively cool location for rice. Additive genetic variance was predominant but some non -additive genetic variance existed for cold tolerance. Good general combining ability (GCA) was generally associated with the cold tolerant parents, 'M-201', and 'L-201', and poor GCA with the most susceptible parent. 7703008. Sterility was positively correlated with late heading. negatively with mature plant height. and negatively with spikelet number. Of the three agronomic characters, heading date had the greatest influence on sterility. Selection of F
's in seven crosses involving M-101, the most cold-tolerant parent, was effective for increasing cold tolerance. Realized heritability estimates for cold tolerance averaged 0.53, and observed selection response for cold-induced sterility averaged -9.4 percentage points.
Studies on the Root Characteristics of Soybean Varieties in Korea
Je-Cheon Chae ; Eun-Sup Lee ;
Korean Journal of Crop Science, volume 33, issue 4, 1988, Pages 420~428
Root is supposed to be important role in growth and yield formation of soybeans and also there is expected to exist varietal differences between soybean root morphology and system. 30 soybean varieties including 10 Korean recommended, 10 Introduced and 10 Korean native varieties were grown at field and pot under standard culture condition. Top and root characteristics were investigated at V4, R1 and R5 stage and T/R relations, correlations with yield were calculated. Top characteristics showed significant difference between 3 variety groups of Korean recommended, Introduced and Korean native variety. Stem length at R1 stage and stem length, stem diameter, number of nodes, number of branches, number of pods and grain yield at R5 stage were significantly different top characteristics. Root characteristics showed significant difference between 3 variety groups were number of thick primary root at V4 stage, primary root angle and root cutting strength at R1 stage, thick root diameter and root dry weight at R5 stage. The correlations between top and root characteristics and soybean yield was greatly different by soybean variety groups, and the top characteristics was more highly correlated then root characteristics. All the top and root characteristics of Korean recommended variety showed no correlations with yield. However, leaf area, stem length, top dry weight in Introduced variety and leaf area, top dry weight, number of nodes, number of thick primary root in Korean native variety were highly correlated with soybean yield.